气候与土壤对烤烟多酚和类胡萝卜素含量

【目的】探讨曲靖烟区气候和土壤因素对烤烟多酚和类胡萝卜素含量的影响效应。【方法】采用两因素随机区组设计法，在曲靖烟区典型植烟生态区（罗平县和马龙县）开展了客土置换种植烤烟试验，并对不同气候和土壤下烤烟多酚和类胡萝卜素含量进行方差分析和相似性分析。【结果】气候对烤烟绿原酸、芸香苷、叶黄素和β-胡萝卜素含量为高度影响效应；土壤对烤烟绿原酸、芸香苷、叶黄素和β-胡萝卜素含量均为中度影响效应；气候与土壤互作对烤烟叶黄素含量为中度影响效应，对烤烟绿原酸、芸香苷和β-胡萝卜素含量为低度影响效应。气候、土壤、气候与土壤互作对烤烟多酚和类胡萝卜素含量总变异的贡献率分别为42.39%、32.72% 和24.89%。马龙气候条件下烤烟绿原酸、叶黄素和β-胡萝卜素含量显著高于罗平气候条件，芸香苷含量也高于罗平气候条件；马龙土壤上烤烟叶黄素和β-胡萝卜素含量高于罗平土壤条件，罗平土壤上烤烟绿原酸和芸香苷含量高于马龙土壤。烤烟多酚和类胡萝卜素含量的值相似和形相似程度大体呈现相同气候＞相同土壤＞不同气候及土壤的趋势。【结论】气候和土壤对烤烟多酚和类胡萝卜素含量均有显著影响，同样气候条件下的烤烟多酚和类胡萝卜素含量的值相似程度为高相似或较高相似，影响曲靖烤烟多酚和类胡萝卜素含量的主导生态因子为气候条件。

Effects of different soil and climate conditions on polyphenol and cartenoids content in flue-cured tobacco

Objective]The experiment was conducted to evaluate the effects of soil and climate conditions of tobacco growing area in Qujing, Yunnan on polyphenol and cartenoids content in flue-cured tobacco. Method]Two-factor randomized block design was adopted for soil-replacement experiment in two typical tobacco-growing areas (Luoping County and Malong County), while variance analysis and similarity analysis of polyphenol and cartenoid content in flue-cured tobacco were conducted under different climate and soil conditions. Result]The contents of chlorogenic acid, rutin, lutein, and β-carotene were highly influenced by climate factors and moderately by soil factors. The interaction of climate and soil factors moderately impacted lutein content, and slightly affected the contents of chlorogenic acid, rutin and β-carotene; the variance contribution rate of soil, climate, and their interaction on polyphenol and cartenoids content in flue-cured tobacco leaf was 42.39, 32.72 and 24.89%, respectively. The contents of chlorogenic acid, rutin, lutein and β-carotene in flue-cured tobacco grown in Malong were higher than that grown in Luoping, while flue-cured tobacco grown on the soil from Malong got higher content of lutein and β-carotene, but lower contents of chlorogenic acid and rutin than that grown on the soil from Luoping. Sequence of similarity degree of polyphenol and cartenoids content in flue-cured tobacco under different soil and climate conditions was as follows: the same climate>the same soil >different climate and soil. Conclusion]Both climate and soil conditions had significant effects on the content of polyphenol and cartenoids in flue-cure tobacco. Under the same climatic conditions, the contents of polyphenol and cartenoids were highly similar. Climatic conditions was the leading ecological factor affecting polyphenol and cartenoids content in flue-cured tobacco grown in Qujing .